affiliation not provided to SSRN, National Cerebral and Cardiovascular Centre - Department of Cardiovascular Medicine, affiliation not provided to SSRN, National Cerebral and Cardiovascular Centre, Tohoku University - Graduate School of Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, National Cerebral and Cardiovascular Centre, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Miyazaki Medical Association Hospital - Cardiovascular Center, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, National Cerebral and Cardiovascular Centre - Department of Cardiovascular Medicine, affiliation not provided to SSRN, National Cerebral and Cardiovascular Centre - Department of Cardiovascular Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, Kumamoto University and Tohoku University, Graduate School of Medicine, Department of Cardiovascular Medicine